BioShock takes place in an alternate-reality 1950s, in which some segment of humankind nestled itself far underwater in some utopian sea lab. However, the sea lab begins to crumble, even as genetic mutation brings the populace of the place to the brink of extinction, or at least, complete metamorphosis. The object is simple: Escape!

After your plane crashes into icy uncharted waters, you discover a rusted bathysphere and descend into Rapture, a city hidden beneath the sea. Constructed as an idealistic society for a hand picked group of scientists, artists and industrialists, the idealism is no more. Now the city is littered with corpses, wildly powerful guardians roam the corridors as little girls loot the dead, and genetically mutated citizens ambush you at every turn.

Features:

• Take control of your world by hacking mechanical devices, commandeering security turrets and crafting unique items critical to your very survival.
  
• Upgrade your weapons with ionic gels, explosives and toxins to customize them to the enemy and environment.
  
• Genetically modify your body through dozens of Plasmid Stations scattered throughout the city, empowering you with fantastic and often grotesque abilities.
  
• Explore a living world powered by Ecological A.I., where the inhabitants have interesting and consequential relationships with one another that impact your gameplay experience.
  
• Experience truly next generation graphics that vividly illustrate the forlorn art deco city, highlighted by the most detailed and realistic water effects ever developed in a video game.
  
• Make meaningful choices and mature decisions, ultimately culminating in the grand question: do you exploit the innocent survivors of Rapture...or save them?